Micro-elemental analysis and characterization of major heavy metals and trace elements in the urinary stones collected from patients living in diverse geographical regions.

In the process of urinary stone formation, several heavy metals and trace elements (HMTE) have been identified among the major constituents of the calculi. The micro-elements within the stones cannot be identified by ordinary laboratory analytical techniques, the latter can only detect the major crystalline component. The objective of the present study was to evaluate the different types of HMTE (no.

Quantitative and qualitative evaluation of toxic metals and trace elements in the tissues of renal cell carcinoma compared with the adjacent non-cancerous and control kidney tissues.

Toxic metals and trace elements (TMTE) are linked to the development of several human cancers. Many reports have documented the association between some TMTE and renal cell carcinoma. In this work, we assessed the presence (qualitative) and evaluated the concentration (quantitative) of 22 TMTE in three groups of kidney tissue samples: renal cell carcinoma (RCC), adjacent non-cancerous, and control kidney tissues from cadavers.

Quantitative Evaluation of Heavy Metals and Trace Elements in the Urinary Bladder: Comparison Between Cancerous, Adjacent Non-cancerous and Normal Cadaveric Tissue.

The role of heavy metals and trace elements (HMTE) in the development of some cancers has been previously reported. Bladder carcinoma is a frequent malignancy of the urinary tract. The most common risk factors for bladder cancer are exposure to industrial carcinogens, cigarette smoking, gender, and possibly diet.

Value of Color Doppler ultrasound, kub and urinalysis in diagnosis of renal colic due to ureteral stones.

Purpose: Despite the routine use of helical CT in diagnosis of renal colic, there are recent concerns regarding the radiation exposure, overuse and costs. We attempted in this retrospective study to evaluate the accuracy of ultrasound (gray-scale and color Doppler with twinkling), KUB and urinalysis in diagnosis of renal colic due to ureteral calculi presented in Emergency Room.

Materials And Methods: A total of 939 consecutive cases of renal colic presented to ER have been managed and evaluated by ureteral ultrasound, KUB and urinalysis for the presence of ureteral stones.

A correlation study between macro- and micro-analysis of pediatric urinary calculi.

Objective: The aim was investigate the relationship between macro- and micro-compositions of pediatric urinary stones by using two combined analytical techniques: Fourier transform infrared spectroscopy (FT-IR) and inductively coupled plasma-optical emission spectrometry (ICP-OES).

Materials And Methods: A total of 74 consecutive urinary calculi were collected from children. Each stone was divided into two equal portions.

Prognostic factors predicting successful response to sildenafil after radical cystoprostatectomy.

Objectives: To assess the efficacy and safety of sildenafil citrate in the management of erectile dysfunction (ED) following radical cystectomy (RC) and to define the different prognostic factors predicting the response to sildenafil in such a challenging group of patients.

Material And Methods: One hundred patients with ED following RC participated in an open-label, non-randomized, prospective, dose-escalation study. The median age of the patients was 53 years and the mean period after RC was 80.

Determination of the chemical composition of urinary calculi by noncontrast spiral computerized tomography.

Various techniques for noncontrast spiral computerized tomography (NCCT) were utilized for the determination of the Hounsefield unit (HU) values of various types of urinary calculi with the aim of determining the best technique for distinguishing various stones compositions. A total of 130 urinary stones, obtained from patients who underwent open surgery, were scanned with a multidetector row scanner using 1.25 mm collimation at two energy levels of 100 and 120 kV at 240 mA.

Prognostic factors for extracorporeal shock-wave lithotripsy of ureteric stones--a multivariate analysis study.

Objective: To define factors that have a significant impact on the stone-free rate after extracorporeal shock-wave lithotripsy (ESWL) of ureteric stones using multivariate analysis.

Material And Methods: Between February 1992 and February 2002, a total of 938 patients with ureteric stones were treated with in situ ESWL using the Dornier MFL 5000 lithotripter. The outcome of treatment was evaluated after 3 months and failure was defined as the presence of any residual stones.

Prospective randomized comparative study of the effectiveness and safety of electrohydraulic and electromagnetic extracorporeal shock wave lithotriptors.

Purpose: We compared the efficacy of 2 shock wave energy sources, electrohydraulic (Dornier MFL 5000, Dornier MedTech, Wessling, Germany) and electromagnetic (DLS, Dornier Lithotriptor S, Dornier MedTech), for the treatment of urinary calculi.

Materials And Methods: A prospective randomized study of 694 patients with urinary stones was conducted during 12 months to compare the efficacy of the 2 machines. Entrance criteria were radiopaque single or multiple stones at any location within the kidney or the ureter, 25 mm or smaller that had not previously been treated by any means.

Extracorporeal shock wave lithotripsy in anomalous kidneys: 11-year experience with two second-generation lithotripters.

Objectives: To present our experience with extracorporeal shock wave lithotripsy (ESWL) in patients with anomalous kidneys and to determine the factors that may influence the stone-free rate in such patients.

Methods: From February 1989 to February 2000, 198 patients were treated for urolithiasis in anomalous kidneys using ESWL. The mean patient age (SD) was 40.

Abdominal and pelvic extra-adrenal paraganglioma: a review of literature and a report on 7 cases.

Introduction: Extra-adrenal paraganglioma (pheochromocytoma) is a rare tumor. Herein we describe the clinical and pathological findings in patients with paragangliomas of the urinary bladder, seminal vesicle and retroperitoneum.

Methods: Between January 1994 and January 2001, extra-adrenal paragangliomas were diagnosed in 7 patients: 3 males and 4 females.

Prognostic value of angiogenesis in schistosoma-associated squamous cell carcinoma of the urinary bladder.

Objectives: To evaluate angiogenesis as a prognostic marker in squamous cell carcinoma of the urinary bladder in 154 patients who underwent radical cystectomy.

Methods: The tumors from 98 men and 56 women (mean age 46.3 +/- 8.

Risk factors for the formation of a steinstrasse after extracorporeal shock wave lithotripsy: a statistical model.

Purpose: We studied the various stone, renal and therapy factors that could affect steinstrasse formation after extracorporeal shock wave lithotripsy (ESWL), Dornier Medical Systems Inc., Marietta, Georgia to define the predictive factors for its formation. Thus, steinstrasse could be anticipated and prophylactically avoided.